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LCD_SPI_ST7565_NHD_C12864 too low contrast??? #272

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jamsjamsen opened this issue Jul 27, 2022 · 4 comments
Open

LCD_SPI_ST7565_NHD_C12864 too low contrast??? #272

jamsjamsen opened this issue Jul 27, 2022 · 4 comments

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@jamsjamsen
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I tried to use the display LCD_SPI_ST7565_NHD_C12864, and the contrast is too weak.
I think the value the contrast is initialized at is around "100" or below, because the display appears blank at those levels.
I was run ContrastTest.ino [u8g2] and the display was easily readable at contrast levels between 110-190, and best between 130-160. (my personal choice 135).

maybe adding a new command to serial or telnet interface would help???
e.g.
sys.lcdcontrast("x")

This is a problem known in the library:
u8g2

ToDo:

  • Put u8x8.setContrast(150) into init code
@karawin
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karawin commented Aug 6, 2022

Ok i will do it soon.

@Va1entin0s
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Excuse me, contrast settings are available now?
like this: "u8g2.setContrast (140);"
Hardware configuration partition? Telnet? Web interface?
I need Contrast = 140 for ST7565 NHD or Contrast = 5 for ST7565 ERC

@karawin
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karawin commented Feb 10, 2023

sys.lcdblv : Display current backlight percent value.
sys.lcdblv("x") : Set the backlight percent value (if the hardware provide it) (range 1 to 100)

@karawin
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karawin commented Feb 10, 2023

No contrast , sorry.

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3 participants